from datetime import datetime,timedelta
import time
from flask import current_app,g, jsonify
from flask import redirect
from flask import request
from flask import session
from flask import url_for
from info import constants, db
from info.models import User, News, Category
from info.utils.commons import login_required
from info.utils.response_code import RET
from . import admin_blue
from flask import render_template


@admin_blue.route('/index')
@login_required
def index():
    user = g.user
    return render_template('admin/index.html',data={'user':user.to_dict()})


@admin_blue.route('/login',methods=['GET','POST'])
def admin_login():
    if request.method == "GET":
        # 去 session 中取指定的值
        user_id = session.get("user_id", None)
        is_admin = session.get("is_admin", False)
        # 如果用户id存在，并且是管理员，那么直接跳转管理后台主页
        if user_id and is_admin:
            return redirect(url_for('admin.index'))
        return render_template('admin/login.html')

    # 取到登录的参数
    user_name = request.form.get('username')
    password = request.form.get('password')
    if not all([user_name, password]):
        return render_template('admin/login.html', errmsg='参数不完整')
    try:
        user = User.query.filter(User.mobile == user_name, User.is_admin == True).first()
        print(user)
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg='数据库查询错误')
    if user is None or not user.check_password(password):
        return render_template('admin/login.html', errmsg='用户名或密码错误')
    session['user_id'] = user.id
    session['mobile'] = user.mobile
    session['nick_name'] = user.nick_name
    session['is_admin'] = user.is_admin
    return redirect(url_for('admin.index'))


@admin_blue.route('/user_count')
def user_count():
    """
    后台页面主页数据展示
    1、总人数、月新增人数、日新增人数、月活跃人数、活跃时间
    2、查询总人数
    3、查询月新增人数：
    获取每月的1号的日期；2018-07-01
    t = time.localtime()
    年= t.tm_year
    月= t.tm_mon
    日= 01/t.tm_mday
    每月1号的日期的字符串：
    '%d-%02d-01' % (t.tm_year,t.tm_mon)
    User.create_time>每月的1日
    # 把日期字符串格式化成日期对象
    datetime.strptime()
    4、查询日新增人数
    '%d-%02d-%02d' % (t.tm_year,t.tm_mon,t.tm_mday)
    :return:
    5、查询活跃人数和活跃的日期
    比较的是用户的last_login的登录时间
    User.last_login<=今天的0时0分，User.last_login>昨天的0时0分
    当前日期：昨天的日期；


    """
    # 总人数默认为0
    total_count = 0
    # 查询mysql数据库的所有非管理员的人数
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception  as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR,errmsg='查询总人数异常')
    # 月新增人数
    mon_count = 0
    # 实例化时间对象，获取每月1日的日期字符串
    t = time.localtime()
    mon_begin_date_str = '%d-%02d-01' % (t.tm_year,t.tm_mon)
    # 把日期格式化成日期对象
    mon_begin_date = datetime.strptime(mon_begin_date_str,'%Y-%m-%d')
    try:
        mon_count = User.query.filter(User.is_admin==False,User.create_time>mon_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR,errmsg='查询月人数异常')
    # 日新增人数
    day_count = 0
    # 获取当前日期的字符串
    day_begin_date_str = '%d-%02d-%02d' % (t.tm_year,t.tm_mon,t.tm_mday)
    # 把日期字符串转成日期对象
    day_begin_date = datetime.strptime(day_begin_date_str,'%Y-%m-%d')
    # 查询数据库
    try:
        day_count = User.query.filter(User.is_admin==False,User.create_time>day_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR,errmsg='查询天新增人数异常')
    # 定义容器，存储活跃的人数和日期
    active_count = []
    active_time = []
    active_begin_date_str = '%d-%02d-%02d' % (t.tm_year,t.tm_mon,t.tm_mday)
    active_begin_date = datetime.strptime(active_begin_date_str,'%Y-%m-%d')
    # 使用循环往前推31天，获取每天的开始日期0时0分0秒和结束日期0时0分0秒
    for x in range(0,31):
        begin_date = active_begin_date - timedelta(days=(x))
        end_date = active_begin_date - timedelta(days=(x - 1))

        try:
            count = User.query.filter(User.is_admin==False,User.last_login>=begin_date,User.last_login<end_date).count()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.DBERR,errmsg='查询活跃人数异常')
        # 把日期对象转成日期字符串
        begin_date_str = datetime.strftime(begin_date,'%Y-%m-%d')
        active_count.append(count)
        active_time.append(begin_date_str)
    # 让活跃人数和日期数据反转
    active_time.reverse()
    active_count.reverse()
    data = {
        'total_count':total_count,
        'mon_count':mon_count,
        'day_count':day_count,
        'active_count':active_count,
        'active_time':active_time
    }
    return render_template('admin/user_count.html',data=data)


@admin_blue.route('/user_list')
def user_list():
    """获取用户列表"""

    # 获取参数
    page = request.args.get("p", 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    # 设置变量默认值
    users = []
    current_page = 1
    total_page = 1

    # 查询数据
    try:
        paginate = User.query.filter(User.is_admin == False).order_by(User.last_login.desc()).paginate(page, constants.ADMIN_USER_PAGE_MAX_COUNT, False)
        users = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    # 将模型列表转成字典列表
    users_list = []
    for user in users:
        users_list.append(user.to_admin_dict())

    data = {"total_page": total_page, "current_page": current_page, "users": users_list}
    return render_template('admin/user_list.html',data=data)


@admin_blue.route('/news_review')
def news_review():
    """返回待审核新闻列表"""

    page = request.args.get("p", 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    try:
        paginate = News.query.filter(News.status != 0) \
            .order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_review_dict())

    data = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}

    return render_template('admin/news_review.html', data=data)


@admin_blue.route('/news_review_detail', methods=["GET", "POST"])
def news_review_detail():
    """新闻审核"""
    if request.method == "GET":
    # 获取新闻id
        news_id = request.args.get("news_id")
        if not news_id:
            return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})
        # 通过id查询新闻
        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return render_template('admin/news_review.html', data={"errmsg": "未查询到此新闻"})
        # 返回数据
        data = {"news": news.to_dict()}
        return render_template('admin/news_review_detail.html', data=data)
    # 执行审核操作

    # 1.获取参数
    # print(request.json)
    news_id = request.json.get("news_id")
    action = request.json.get("action")

    # 2.判断参数
    if not all([news_id, action]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    if action not in ("accept", "reject"):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

    news = None
    try:
        # 3.查询新闻
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)

    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到数据")

    # 4.根据不同的状态设置不同的值
    if action == "accept":
        news.status = 0
    else:
        # 拒绝通过，需要获取原因
        reason = request.json.get("reason")
        if not reason:
            return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
        news.reason = reason
        news.status = -1

    # 保存数据库
    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="数据保存失败")
    return jsonify(errno=RET.OK, errmsg="操作成功")


@admin_blue.route('/news_edit')
def news_edit():
    """返回新闻列表"""

    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    try:
        filters = []
        # 如果有关键词
        if keywords:
            # 添加关键词的检索选项
            filters.append(News.title.contains(keywords))

        # 查询
        paginate = News.query.filter(*filters) \
            .order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_basic_dict())

    data = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}

    return render_template('admin/news_edit.html', data=data)


@admin_blue.route('/news_type')
def get_news_category():
    # 获取所有的分类数据
    categories = Category.query.all()
    # 定义列表保存分类数据
    categories_dicts = []

    for category in categories:
        # 获取字典
        cate_dict = category.to_dict()
        # 拼接内容
        categories_dicts.append(cate_dict)

    categories_dicts.pop(0)
    # 返回内容
    return render_template('admin/news_type.html', data={"categories": categories_dicts})


@admin_blue.route('/add_type', methods=["POST"])
def add_category():
    """修改或者添加分类"""

    category_id = request.json.get("id")
    category_name = request.json.get("name")
    if not category_name:
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    # 判断是否有分类id
    if category_id:
        try:
            category = Category.query.get(category_id)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.DBERR, errmsg="查询数据失败")

        if not category:
            return jsonify(errno=RET.NODATA, errmsg="未查询到分类信息")

        category.name = category_name
    else:
        # 如果没有分类id，则是添加分类
        category = Category()
        category.name = category_name
        db.session.add(category)

    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="保存数据失败")
    return jsonify(errno=RET.OK, errmsg="保存数据成功")